Got one and went from 0% success rate to ~95%. Works best on a 30 minute on/30 minute off timer, with no rockwool. (I just put aluminum foil over the net pots and pop a hole in them. Right now I have one TINY (like 2cm tall or shorter) purple kush cutting in it that has like 20-30 taproots growing out of it after about a week.
you didn't mention the fun aspect here of only 95% sorry keep the pump on 24/7 then its 100% ezy peezy over messing with that soil and clonex ..lol